Gangue leakage prevention mechanism for telescopic beam of hydraulic support

Abstract

The utility model relates to the technical field of hydraulic supports, in particular to a hydraulic support telescopic beam gangue leakage prevention mechanism which comprises a top beam, a movable groove is formed in the front end of the upper surface of the top beam, protection plates are movably installed on the two sides of the upper portion of the movable groove, and first movable seats are fixedly arranged on the two sides of the rear end of the inner surface of the movable groove. The middle of the outer surface of each first movable seat is movably sleeved with a first supporting top, a telescopic beam is movably installed on the upper surface of the movable groove in a drawing mode, second movable seats are fixedly arranged on the two sides of the middle of the rear end of the upper surface of the telescopic beam, and the middle of the outer surface of each second movable seat is movably sleeved with a second supporting top. Third movable seats are fixedly arranged on the two sides of the front end of the upper surface of the telescopic beam, and a side protection plate is movably installed at the front end of the telescopic beam. According to the utility model, the existence of supporting neutral positions can be reduced, the problem that coal gangue on a working face roof leaks along the gap neutral positions can be avoided, the risk phenomenon of roof emptying is further avoided, and the safety in the supporting process is improved.

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